A recent study focused on the number of times men and women send a Twitter message in a day. The sample information is summarized below. 
At the .01 significance level, is there a difference in the mean number of times men and women send a Twitter message in a day? What is the test statistic for this hypothesis?
Definitions:
Maudsley Model
A family-based treatment for anorexia nervosa where parents play an active and positive role in helping their child to overcome the disorder.
Family Therapy
A form of psychotherapy that aims to address psychological problems by involving all family members in the therapy process.
Bulimia Nervosa
A severe eating disorder characterized by episodes of overeating followed by behaviors aimed at preventing weight gain.
Cognitive-Behavioral Therapy
A form of psychotherapy that treats problems and boosts happiness by modifying dysfunctional emotions, behaviors, and thoughts.
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